My check engine light came on and I brought it to auto zone for a diagnostic and it read error code P0442 and it's not the gas cap where is the canister purge valve located on a 2007 chevy tahoe???

SOURCE: locating vacuum canister and testing it

The purge solenoid should be in the hard plastic vent lines that run under the tube between the intake and the air filter, ablove the transmission, it is common for vibration holes to be worn in the hard plastic tubes causing a vacuum leak. The purge solenoid is small and it has an electric wire coming from it. I 'think' your canister is in the front lower left corner under the hood, you may have to remove splash shields to see it. The problem is most likely in the hard plastic lines at the solenoid. Let me know if this helps.

SOURCE: can some one tell me where is Canister Purge

It is between the charcoal canister and the intake manifold. It is in a vac line, the same one as the canister purge solenoid. It real close to the battery. I might be able to post a pic if you can't find it.

ZJ Limited

• 17989 Answers
• Posted on Sep 01, 2010

SOURCE: I closed this accidentally. 1998 Chevy S10 4.3

P0442 - Evaporative Emission Control System Leak Detected (small leak)

This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0442 most likely means one or more of the following has happened:
* A loose or improperly affixed gas cap
* A non-conforming gas cap (i.e. not factory/original brand)
* A small leak/hole in a fuel vapor hose/tube
* Other small leak in EVAP system
* Faulty vent o-ring seal

Possible Solutions:
With a P0442, the most common repair is to:
* Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
* Otherwise, replace the gas cap, or
* Inspect the EVAP system for cuts/holes in tubes/hoses


Sound like a any leak there. Check it and tell us news.

SOURCE: 2002 wrangler 4.0 6 cylinder

Here is a picture of the canister and all the other parts.Let me know if this worked for you.One other thing is if you have a leak taping it will not keep it from leaking.You will have to replace the part that is leaking or not working properly.Let me know how this picture works out.This is the first time I have tried this.Good luck and thanks for using fixya.

SOURCE: Check Engine Light came on - code reader read out error codes

make sure your lighter fuse is not blown. sound funny but thats a common prolbem on chevys